Sir William Stewart Ph.D., D.Sc., FRS, FRSE, was President of the Royal Society of Edinburgh from 1999-2002 and Chairman of the Microbiological Research Authority. He is married to the former Dr. Elizabeth Smales, a senior medical officer at the Scottish Executive. From 1990 to 1995 Sir William was Chief Scientific Adviser, Cabinet Office and the first Head of the UK Office of Science and Technology (1992-1995). Wikipedia
The definitive Wikipedia entry for William Stewart. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/William_Stewart_%28scientist%29